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CVE-2017-15118

8.3 · HIGH

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be…

Published Jul 27, 2018CWE-121EPSS 11.93%

Overview

CVE-2017-15118 is a high-severity vulnerability. It was published on July 27, 2018 and has a CVSS 3.0 base score of 8.3 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2017/11/28/8Refwww.securityfocus.com/bid/101975Refaccess.redhat.com/errata/RHSA-2018:1104Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15118Reflists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.htmlRefusn.ubuntu.com/3575-1/Refwww.exploit-db.com/exploits/43194/Refwww.openwall.com/lists/oss-security/2017/11/28/8Refwww.securityfocus.com/bid/101975Refaccess.redhat.com/errata/RHSA-2018:1104

How CyberStrike helps

Frequently asked questions

What is CVE-2017-15118?

CVE-2017-15118 is a high-severity vulnerability. It was published on July 27, 2018 and has a CVSS 3.0 base score of 8.3 (HIGH).

How severe is CVE-2017-15118?

This vulnerability has a CVSS 3.0 base score of 8.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-15118?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-15118?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-15118 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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